//4.3 赋值操作

class Tank{
    int level;
}

public class Assignment {
    public static void main(String[] args) {
        Tank t1 = new Tank();
        Tank t2 = new Tank();

        t1.level = 9;
        t2.level = 47;

        System.out.println("1: t1.level: "+t1.level+", t2.level: "+t2.level);
        t1 = t2;
        System.out.println("1: t1.level: "+t1.level+", t2.level: "+t2.level);
        t1.level = 27;
        System.out.println("1: t1.level: "+t1.level+", t2.level: "+t2.level);
    }
}
